Congress party's chief spokesperson Abhishek Singhvi has met Pentagon officials in an apparent exercise to apprise the United States leadership about the status of the stalled Indo-US civilian nuclear agreement.

Singhvi, who arrived in Washington on Sunday, met the officials on Monday and is slated to participate in a closed-door briefing with members of Congress and their senior staff on the issue.

Singhvi is also due to address the World Affairs Council and The Heritage Foundation, the United States India Business Alliance said, while praising the Congress for sending a 'legal expert' like Singhvi.

"This is a historic opportunity and with uncertainty increasing among American policymakers and with the eyes of Congress beginning to focus more and more on a presidential election, the timing of this visit is critically important for the US and India," Sanjay Puri, President of the USIBA, said in a press statement.

Singhvi will also be visiting New Haven and Boston. He will address students at the Yale University, the Massachusetts Institute of Technology and Boston University.

While in Boston, he will also be participating in a joint technology event focusing on China, India and Russi,a organised by the Massachusetts Technology Leadership Council and the US-India Business Alliance, among others.